Aforce of 20 newtons is exerted on a chair from its right and a force of 12 newtons is applied from
chair and in what direction will the chair tend to move?
a. the net force acting on the chair is 8 newtons, and the chair moves toward the left.
b. the net force acting on the chair is 32 newtons, and the chair moves toward the left.
c. the net force acting on the chalr is 8 newtons, and the chair moves toward the right:
d. the net force acting on the chair is 32 newtons, and the chair moves toward the right.

The net force acting on the chair is 8 newtons, and the chair moves toward the left.

Explanation:

We can better understand this problem if we analyze it through a free body diagram. This free body diagram is attached as an image.

If we make a sum of forces acting over the chair we can find -20 + 12 = -8 [N]

The minus sign indicates that the chair is moving to the left.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)